#ifdef GL_ES precision mediump float; precision mediump int; #endif uniform sampler2D sampler0; uniform sampler2D sampler2; uniform vec4 u_setting; varying vec2 v_texcoord0; void main() { gl_FragColor.rgb = mix(texture2D(sampler0, v_texcoord0.xy).rgb, texture2D(sampler2, v_texcoord0.xy).rgb, u_setting.x); gl_FragColor.a = 1.0; }